The teen’s dad said: “He is out of the danger zone and is being kept in hospital for a few days.

“We would like to thank the paramedics for saving our son’s life.

“These legal highs have to stop.”

The father’s Facebook post was followed by dozens of messages of support.

The young man is understood to have been out in Belfast before being found in the street by a passer-by who called for an ambulance.

Paramedics treated him at the scene and he was brought to hospital.

The teenager is originally from the North Down area and knew Adam.

Hundreds of Adam’s friends turned out for his funeral in Bangor on Friday afternoon.

His mum pleaded with mourners not to let her son’s death be in vain.

Adele Wallace said: “I hope and pray no other parents, aunts, cousins, nephews and brothers have to stand like we are today and that some good can come out of this and we can help other kids stay away from the things that made him so unwell, so hopeless.

“The dismay, the pain and the anguish in his head - it was so fried.

“At least we can take comfort when we look at Adam. We can see his wee face is peaceful.